On 27 Jan 2021, Joe Phigan said the following...
 JP> There's an app in F-Droid called Script Manager. Probably in Play Store
 JP> too. Does that look like it would do it?

I'm actually doing this inside of Termux.  I'm operating the Termux sessions
as a computer of it's own.

This BBS is running in it.

pdmenu looks like it will accomplish what I'm looking for.

--- Mystic BBS v1.12 A46 2020/08/26 (Raspberry Pi/32)